Hi there.
Keep in mind that I am not a very experienced modder still, so feel free to dismiss these.
Also, I only take a look at maps that are marked as Insane (at least 3,75 stars), so I have only taken a look at your "Master" difficulty.
Do not use 1/16 divider. It's unnecessary, even the game tells you so.
Change to 1/4 divider, remap any parts from 1/16 to 1/4. I'll try my best to point out the ones you should change.
A lot of your sliders/circles are on blue ticks. While you won't get particularly slapped by anyone for snapping on blue ticks, generally it's better if a circle or slider starts/ends on a red or white tick.
*If you feel like you have to snap a note to a blue tick, it's probable that you set your offset incorrectly.
00:29:510 - This is where your offset should be. Change it. You won't have to resnap a lot of things.
Very inconsistent combos. You should split them up. These are my suggestions where you should put a new combo.00:32:082 (6)
00:34:439 (11)
00:38:939 (5)
00:40:654 (9)
00:45:797 (6)
00:47:510 (12)
00:52:654 (6)
00:54:368 (12)
01:14:941 (12)
01:20:083 (4)
01:21:798 (7)
01:26:941 (6)
01:28:655 (10)
01:30:370 (14)
01:33:798 (6)
01:35:513 (11)
01:37:226 (15)
01:40:656 (6)
01:42:370 (10)
01:44:084 (14)
01:47:513 (7)
01:49:227 (13)
01:50:942 (17)
01:56:085 (5)
01:57:799 (9)
02:01:228 (6)
02:04:657 (15)
02:08:085 (5)
02:09:800 (10)
02:11:514 (14)
02:14:942 (6)
02:16:657 (10)
02:18:371 (15)
02:21:800 (5)
02:23:514 (9)
02:25:229 (13)
02:28:657 (5)
02:30:372 (9)
02:49:230 (7)
02:52:658 (8)
02:56:087 (7)
03:02:944 (5)
03:04:659 (9)
03:06:373 (13)
03:09:802 (6)
03:11:516 (11)
03:16:659 (5)
03:18:373 (11)
03:23:516 (6)
03:25:231 (10)
03:26:944 (14)
^^^
Expandable, if you hadn't known.Other things:00:30:368 - First kiai should start here.
00:57:797 - First kiai should end here.
01:25:227 - Second kiai should start here.
02:06:371 - Second kiai should end here.
03:01:230 - This kiai is unnecessary. Get rid of it.
00:43:011 (16,17) - This part should be changed entirely. It doesn't snap properly to 1/4 and uses 1/16.
02:02:514 (9,10) - These two don't really fit the beat properly. Change it so that a hit circle or slider would start at 02:02:941 and add a new combo.
02:19:442 - 02:19:870 - Why is there nothing here?
02:31:657 (13,14) - Again, they don't properly fit the beat. Again, make it so a note starts on 02:32:085 and add a new combo there.
03:13:015 (15,16,17,18,19) - Confusing to read.
03:19:874 (15,16,17,18,19) - ^
03:26:944 (14,15,16,17,18,19) - ^
03:27:801 (16,17,18,19) - These in particular are too loud when compared to the fading song. Turn their volume down.
That's about all I could find.